There is a fascination about rockets that delights children and adults alike. The arc of smoke, the idea of flight, and the fun of action at a distance combine to make rockets a wonderful toy. To these pleasures we will add the forbidden glee of playing with matches, and the satisfaction of learning how something magical actually works. Unlike most of the rest of this book, this really is rocket science.
In the first century AD, the mathematician Hero of Alexandria described a device called the aeolipile, in which steam was conducted through pipes from a boiler to a sphere which had two jets from which the steam could escape.
The boat is a plastic bottle, cut in half lengthwise. I used a soft plastic bottle that contact lens saline solution comes in. It is made of white High Density Polyethylene (HDPE), and is very easy to cut using an Xacto knife or other sharp utility knife.
Why does it get really hot inside a car parked in the sun? It's the greenhouse effect.
A compact fluorescent bulb gives off very little heat energy because they do not use resistance and cause a light to glow hot.
Learn what materials make the best insulation.
The chemical energy stored in the peanut was released and converted into heat energy. The heat energy raised the temperature of the water in the small can.
Describes how you can use shade trees to keep your home cool.
In this experiment students will explore the effect of changing the proportions of the metallic components on the melting point of an alloy.
Cooking instructions tell you to add salt to water before boiling it.